Sprinkler-head.



G BRENT SPBINKLQR-HBAD. APPLIoAmox FILED lux 25 1907 Patented D00.15,1908.

Messes;

CHARLES BRENT, OF BRANDON, MANITOBA, CANADA.

SPRINKLER-EZE AD.

No. 907,000.A

Specication of Letters Patent.

Patented Tice. 15, 1995;.

Application filed March 25, 1907. Serial No. 364,256.

To all whom 'it may concern.'

Be it known that I, CHARLES BRENT, residing at Brandon, in the Provinceof Manitoba and Dominion of Canada, have invented a certain new anduseful Improvement in Sprinkler-Heads, of which the following is a full,clear, and exact description, reference being hadto the accompanyingdrawings.

This invention relates to improvements in sprinkler heads set forth inmy co-pending application for sprinkler heads, Serial Num* ber 342,015filed Nov. 5, 1906, wherein a valve and spreading device is mounted in asuitable frame above a valve seat and nozzle carried by a diaphragm,whereby when the valve 'is pressed against its seatit prevents adischarge through the head. A suitable device is arranged in conjunctionwith the valve and its seat for holding the former upon the same and itis. in connection with this device that the present invention has beendevised.v In-this co-pending application an opening is arranged throughthe frame and through the valve stem in a manner such that when thevalve is seated these o enings register and a fusible pin is inserted terein for holding the valve upon its seat.

It has been found that there is a draw back to this construction due tothe fact that the heat does not get ready access to the pin, inasmuch asthe. surrounding metal of the frame at the valve stem prevents suchaccess. In the present invention therefore the parts are arranged in amanner such that the o ening in the valve stem is larger' than theiqusible pin and is arranged in the stem so that when the valve isfirmly seated the pin will take in suitable recesses in the under sideof the frame at the top, so that the greatest possible amount of freespace is provided about the in.-

T e invention may be further briefly summarized as consisting in theconstruction and combination of parts hereinafter set forth in thefollowing descriptions, drawings and claim.

Referring to the drawings Figure l is a sectional view of a headconstructed, according to my invention; Fig. 2 is a sectional vieviT ofthe u per part of the frame showing the pin in p ace and Fig. 3 is adetail view of a portion of the valve stern. with the pin in place.

In the drawings a preferred construction receive a threaded portion l ofthe frame 5, i

which holds the diaphragm 6 in place upon the base. This diaphragmcarries the'noazle 7 which is provided with a seat 8., The frame 5 hasan opening 9 in the u Viper part thereof for the rece tion of the va vestem 10 and also has at t 1e lower part thereof recesses 11 for thereception of the fusible pin i2. These recesses 11 are preferably ofarc-shape but are based upon a greater radius than that of the pinwhereby the latter will engage in the recess at a `single point and thegreatest amount of space possible is thereby provided about the pin asshown in Fig. 2.

The valve stem. 10 is provided with a valve 13 and an opening M; whichis greater in diameter than the fusible pin 12 and is located at a pointsuch that when the valve 13 is iirmly seated, with lthe diaphragm 6deflexed, the fusible pin 12 may be inserted through the opening 14 andinto the recesses 11 in. a manner such that the valve is held firmlyupon its seat.

,in operation the pin assumes the position in the opening of the stemand in the recesses in the manner shown in the drawings, so that thereis free space about the pin in the recesses'of the frame and there isfree space above the pin in the opening of the valve stem, whereby heatproduced by the fire may readily act upon this pin without necessitatingthe heating of all of the 'paris te the extent of fusing it.

Having described my invention, l claim:

In a sprinkler head, in combination, a base, a nozzle a valve scatmounted in said base, a supporting frame extending above said base, aguiding member carried by said. frame and having an opening through thesame for a valve stem and provided with curved recurve recesses at thebottom of said guiding cesses on each side of said opening at thebotmember. 10

tom, a valve for operating said valve seat, a In testimony whereof I aHXmy signature stem for said valve slidably mounted in the in Iohepresence of two Witnesses.

opening in said guiding member and having CHARLES BRENT. a hole in thestem and a fusible pin of less di- Witnesses: ameter than the hole insaid stem and MICHAEL J. GALVIN,

adapted to project laterally and bear in the Y HARRY E. MONTGOMERY.

